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58 lines
2.3 KiB
HTML
58 lines
2.3 KiB
HTML
<p>Table: <code>DailySales</code></p>
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<pre>
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+-------------+---------+
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| Column Name | Type |
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+-------------+---------+
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| date_id | date |
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| make_name | varchar |
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| lead_id | int |
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| partner_id | int |
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+-------------+---------+
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This table does not have a primary key.
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This table contains the date and the name of the product sold and the IDs of the lead and partner it was sold to.
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The name consists of only lowercase English letters.
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</pre>
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<p> </p>
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<p>Write an SQL query that will, for each <code>date_id</code> and <code>make_name</code>, return the number of <strong>distinct</strong> <code>lead_id</code>'s and <strong>distinct</strong> <code>partner_id</code>'s.</p>
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<p>Return the result table in <strong>any order</strong>.</p>
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<p>The query result format is in the following example.</p>
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<p> </p>
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<p><strong>Example 1:</strong></p>
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<pre>
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<strong>Input:</strong>
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DailySales table:
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+-----------+-----------+---------+------------+
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| date_id | make_name | lead_id | partner_id |
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+-----------+-----------+---------+------------+
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| 2020-12-8 | toyota | 0 | 1 |
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| 2020-12-8 | toyota | 1 | 0 |
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| 2020-12-8 | toyota | 1 | 2 |
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| 2020-12-7 | toyota | 0 | 2 |
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| 2020-12-7 | toyota | 0 | 1 |
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| 2020-12-8 | honda | 1 | 2 |
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| 2020-12-8 | honda | 2 | 1 |
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| 2020-12-7 | honda | 0 | 1 |
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| 2020-12-7 | honda | 1 | 2 |
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| 2020-12-7 | honda | 2 | 1 |
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+-----------+-----------+---------+------------+
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<strong>Output:</strong>
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+-----------+-----------+--------------+-----------------+
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| date_id | make_name | unique_leads | unique_partners |
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+-----------+-----------+--------------+-----------------+
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| 2020-12-8 | toyota | 2 | 3 |
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| 2020-12-7 | toyota | 1 | 2 |
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| 2020-12-8 | honda | 2 | 2 |
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| 2020-12-7 | honda | 3 | 2 |
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+-----------+-----------+--------------+-----------------+
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<strong>Explanation:</strong>
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For 2020-12-8, toyota gets leads = [0, 1] and partners = [0, 1, 2] while honda gets leads = [1, 2] and partners = [1, 2].
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For 2020-12-7, toyota gets leads = [0] and partners = [1, 2] while honda gets leads = [0, 1, 2] and partners = [1, 2].
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</pre>
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